ELAN data

The data research infrastructure allows researchers to investigate the current and past states of health affairs in the region Haaglanden and Hollands Midden, while also enabling the development of exploratory and predictive models using the available data as input. With its extensive data sets the ELAN research infrastructure serves as an ideal platform for conducting a wide range of studies, including both clinical and societal research.

The datasets are housed in two separate data infrastructures:

the I-Drive: hosted on the secure servers of LUMC.
the CBS-RA: hosted on the servers of the Statistics Netherlands (CBS).

Each infrastructure has unique advantages and limitations. For a detailed comparision, visit the data environments overview.

Data Sources and Coverage

ELAN securely links data from multiple sources at the individual level, ensuring privacy by minimising the risk of identification, even when datasets are combined. The table below provides an overview of the available data sources and their populations:

Type of data	Source(s)	Population
Primary care health data	General Practitioners	patients in the ELAN region
Data from Statistics Netherlands	Statistics Netherlands	the Netherlands
Health Insurance data	Vektis	the Netherlands
Patient health data	Hospitals	patients from the hospitals HagaZiekenhuis or HMC
Acute and chronical care data	Hadoks	patients in Haaglanden
Mental health data	Parnassia	patients in Haaglanden
Perinatal data	Perined	patients in the Netherlands
Covid-19	GGD Haaglanden	patients in Haaglanden
WMO data	Municipality of The Hague	citizens of The Hague
Cardiovascular data	Hospital	patients from the Reinier de Graaf hospital
Your own data	You	A population with an overlap to any of the sources above

For a detailed statistical overview of the data sets, including key insights and research potential, refer to this article.

By combining comprehensive datasets with secure linkage capabilities, ELAN enables cutting-edge research that bridges the gap between clinical outcomes and societal health determinants.